A RARE BLUE AND WHITE ‘MASTER OF THE ROCKS’ BRUSH POTKANGXI PERIOD (1662-1722)The brush pot is decorated with a continuous mountainous riverscape scene depicting two figures traversing the river on a sampan, with a few other figures on the promontory, all between two narrow geometric borders. The base is inscribed with four characters reading yu tang jia qi, 'precious vessel for the Jade Hall’.6 1/8 in. (15.5 cm.) high